Hi Badger
The pattern on the surface is kind of strange and seems to have more to do with the way the bark grows than anything else. It does not seem to have anything to do with the grain which is very straight and fine. The family that it belongs to is Myrtaceae which includes about 300 species but not many are native to America they include clove, guava, feijoa, allspice, and eucalyptus. I guess the thing you would be most familiar with would be Guava.
Graeme